초록 ▼

A rotatable contactless RF signal coupler, which couples RF signals between an antenna and an RF signal processor in a portable radio, along with an antenna capable of operating in two modes is described herein. Specifically, the signal coupler includes a transformer that is primarily located within

A rotatable contactless RF signal coupler, which couples RF signals between an antenna and an RF signal processor in a portable radio, along with an antenna capable of operating in two modes is described herein. Specifically, the signal coupler includes a transformer that is primarily located within the hinge formed by the housing of the radio and a rotatable flip portion. Substantially constant inductive coupling is maintained in the coupler regardless of rotation. The antenna is capable of operating in a narrow band and a wide band mode to afford antenna operation through varied conditions.

대표청구항 ▼

A portable radio comprising: a housing; a hinged flip portion attached to said housing by hinge means for permitting rotation about an axis formed by said hinge means and said housing; signal processing means for processing RF signals disposed within said housing; a first antenna disposed within sai

A portable radio comprising: a housing; a hinged flip portion attached to said housing by hinge means for permitting rotation about an axis formed by said hinge means and said housing; signal processing means for processing RF signals disposed within said housing; a first antenna disposed within said hinged flip portion; and coupling means for coupling R.F. signal between said first antenna and said signal processing means partially disposed coaxially within said hinge means, said coupling means comprising a first transformer having a primary coil means and secondary coil means, said primary coil means coupled to said signal processing means, said secondary coil means coupled to said first antenna, said primary coil means and said secondary coil means being positioned coaixally with said hinge means such that substantially constant inductive coupling there between is maintain over a range of rotation and substantially constant signal coupling between said fist antenna and said signal processing means occurs regardless of rotation.